D-Link DWR-966 User Manual page 70

System Reboot & Reset
Reboot: Select Reboot and click Apply; a countdown timer will appear
and count down the reboot period. After the device reboots, the Login
page will be displayed.
Revert to factory reset configuration: Select revert to factory reset
configuration and click Apply. The DWR-966 will restore all
configuration settings to the original factory default settings.
Note: Restoring factory default settings will erase all of your
existing settings.
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